<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="../css/bootstrap.min.css">
</head>
<body>
       <!-- 给一个容器 -->
       <div class="container">
        <div class="row text-center" >
            <h1>学生信息管理系统</h1>
            <hr>

            <a href="/index.html" class="btn btn-success">首页</a>
            <a href="/add.html" class="btn btn-warning">添加</a>

            <br>
            <br>
        </div>

        <!-- col-md-8 中等屏幕的8  12 -->
       <!-- <form action="/add" method="post" role="form" class="col-md-5"> -->

        <div class="row">
            <div class="form-group col-md-5">
                <label for="username">姓名</label>
                <input type="text" name="username" id="username" class="form-control">
            </div>
        </div>

        <div class="row">
            <div class="form-group col-md-5">
                <label for="sex">性别</label>
                <input type="text" name="sex" id="sex" class="form-control">
            </div>
        </div>

        <div class="row">
            <div class="form-group col-md-5">
                <label for="age">年龄</label>
                <input type="text" name="age" id="age" class="form-control">
            </div>
        </div>
        <p class="tip"></p>

        <div class="row">

            <div class="text-center col-md-5">
                <button type="submit" class="btn btn-success submit">提交</button>
                <button type="reset" class="btn btn-danger">重置</button>
            </div>
        </div>
       <!-- </form> -->

    </div>
    <script src="./js/jquery.min.js"></script>
    <script>
        // let btn = document.querySelector(".submit");
        // btn.onclick=()=>{
        //     console.log(username,username.value,sex.value,age.value)
        //     let xhr = new XMLHttpRequest();
        //     xhr.open("post","/add",true);
        //     xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')
        //     xhr.send(`name=${username.value}&sex=${sex.value}&age=${age.value}`); 
        //     xhr.onreadystatechange = function () {
        //         if (xhr.readyState == 4) {
        //             if (xhr.status == 200) {
        //                 //获取span标签
        //                 let tip = document.querySelector(".tip");
        //                 // window.location="/index.html"
        //                 console.log(xhr.response);
        //                 let data = JSON.parse(xhr.response);
        //                 if(data.code==200){
        //                     console.log(xhr.response)
        //                     window.location="/"+data.mag
        //                     return
        //                 }
        //                 tip.innerHTML = data.mag;
        //             }
        //         }
        //     }
        // }
        $(".submit").on("click",function(){
            let username = $("#username").val();
            let sex = $("#sex").val();
            let age = $("#age").val();
            console.log(username,sex,age,1111);
            $.ajax({
                url:"/add",
                type:"post",
                data:{
                    username:username,
                    sex:sex,
                    age:age
                },
                success:function(res){
                    if(res.code == 200){
                        window.location="/"+res.mag
                    }else{
                        $(".tip").html(res.mag)
                    }
                },
                error:function(err){
                   
                }
            })
        })
    </script>
</body>
</html>
